Manufacture of rubber hose.



H. Z. COBB.

MANUPAUTURE OPRUBBER HOSE.

APPLIGATION MLBD rms. z5, 1911,

1,002,644, Patented sept. 5,1911.

, 2 SHEETS-SHEET l` I O .j H II' j I l mf D] NQ Q b w o o w I Y kg HJ m :FVINVENTOR WITNESSES; i mw By zzomeys,

A awww@ 21W H. Z. COBB. MANUFATURE 0F RUBBER HOSE. APPLIGATION 111.1111 11:13.25, 1911-.

1,002,644. Patented sept. 5,1911.

2 BH1!HTW-SHEET2 o" cy INVENTGR WITNSSES." M

:mmm *m mmm AUTUBEI? F RUBBER HSH im, mim. M. t@

ply mi wie@ 11mm. he" mlm tube, thym m comi 140115, has@ i5; pain.;

i ahw@ tl m." ya 1 J1 L@ this L* 1;" il, di@ mi, wh th@ 9.111 tlm man .im www Wi hrm V105 invenment thereto being shown in vertical section; Fig. 2 is a side elevation of the impregnating or coating attachmentand of thebraiding machine viewed from the side of the machine on which the tank of rubber composition is located. p

Referring to the drawings, let A designate as a whole the braiding machine, and B the rubber coating device. The braiding machine being well known, is'not shown in detail and requires no description other than to state that a. and b are the upper and lower plates between which the necessary gearing' for driving the bobbins is arranged, and o o are the bobbins, all of which may be of the usualconstruction. The yarns d cZ from the bobbins converge, forming a shed, in the Well known manner. In the machine shown power is applied to a driving pulley e which through a clutch f is coupled to the main shaft g from which power is taken through gears for driving the elements of the braiding machine.

C is the hose which is carried up through the center of the braiding4 machine in me usual manner, except that it first passes through the coating device. This device comprises essentially a coating chamber h to which the rubber composition or friction dough is fed under suitable pressure in any Aconvenient way, the hose being properly centered by passing through a. thin tube or inandrel z' which is centered by adjusting screws y' .7', and which terminates just beneath a ring die or wiper "I which removes any excess of composition from the hose. The emerging coated hose C passes up throughthe machine, being extended through the air for a sufficient distance to partially dry the coat-v ing. and which on reaching t `e braiding point or pointfof convergence has the outer web .braided upon it, and then passes up through a central guiding and wiper die m, which w'ipes off the excess of composition from the exterior ofthe hose and spreads what remains uniformlyover the outer web, the hose C2 thus coated then passing a suitable distance vthrough the air to dry oli the outer composition which would render it too sticky, and by ng then'reeledor coiled in any usual way; after whiehit may receive any desirable outer wrapping or may be at once taken to the vulcanizing oven and vulcanized.

The upper die m is soproportioned tothe lower die. as to wipc off a certain A amount of the rubber composition `or dough and cause the latter to bank up or accumulate in a mass or bank shown at 7?, forming ,at this point a coherent cake of rubber dough adhering to the hose and surrounding the converging yarns, so that as the latter are carried by the bobbins they are forcedto cut loeir .,way through thisl mass, so that the lattciis constantly being stirred and .rolled f the shed,

with'the motion somewhat resembling thatA of a vortex ring, whereby continually fresh surfaces are presented, and whereby the yarns in passing through the constantly stirringmass are thoroughly impregnated with the rubber composition.

For feeding the rubber composition or friction dough to the coating chamber h, any suitable propelling mechanism may beprovided, that shown comprising a screw conveyer g turning in a tubular shell r of suitable length which at .one end draws thedough from the bottom 'of a hopper s, and

at the other end propels it into the chamber h. For rotating this conveyer shaft g, power may be taken from any suitable point, as for example from a sprocket wheel on an upper shaft t of the braider, which through a chain u drives a sprocket wheel on a transverse shaft lu, which passes through the hopper s and preferably has stirring arms upon it within the hopper, as shown, whereby the mass of dough in'the hopper is kept stirredy and agitated, and romthis shaft anothersprocket chainw is arranged to drive the conveyer shaft g. Other propellingv or forcing means, however, for keeping a constant flowbt the dough under suitable pressure into the coating chamber` t may be substi tuted. v

The method and apparatus described are applicablenot only to coat-ing hose with rubber compositionor frictiondough, but to any other plastic coating that -it may be desired to apply.

The invention may be modified in various respects Within the skill or judgment of the operator, and. is not confined to the special apparatus,- or to the precise details of manipulation described. The invention isapplicable not only tohose but to any like or ianalogous product requiring a tubular textile envelop, such for vexample as the insulating of electric wires. For hose, the inner or lining tube or core might in some instances be' omitted and the tubular web be braided or woven upon any suitable support inthe well known manner; in such case it is only l necessaryv to provide for supplying the plastic material tothe point beneath the wiping die m at which theyarns converge to form the web. l

As a modification of my invention the die fm,y might be set a little higher than shown, with the effect that the mass p would'be above the point at `which the yarns converge,

so that the yarns forming the textile web y would remain d rv until laid upon the. core to form the web, their impregnation being com- .pleted immediately atterwardby thc passing ot the web through the mass p of surplus.

coating material. p

I amaware' that in vinsulating electric wires, the wire with or `Without a bralded covering upon it has been passed down- Wardly' through a funnel-shaped cup com taining a, thin liquid, the forming the bra v.ed covering being Caused tol converge upon the Wire within the liquid. in. suchv cup whereby to impregnato the braided covering With such liquid. My invention. is distinY guished from this in that the coating material is in semi-solid or dough-like condition, its coherence being such as to mainH )l0A tain itself upon the .core and against a viping die Without the aid of an hopper recep tacle and even. against the el eet of gravity.

I claim as my invention 1. The process of making hose or the like,

" which consists in. forming a tubular textile web While maintaining around A.it a mass ot dough-like plastic material. through which the yarns pass on their Way to form the Web, whereby theyarns are impregnated and the 2O web is coated with such material..

2. The process of4 making hose or the lilre, which consists in forminga tubular textile web, While maintaining around it a mass of dough-lilte plastic rubber composition through which the yarns pass on their Way to form the Web, whereby the yarns are impregnated and the web is coated with -'said material. l

3. The process of making hose or the like, which consists in forming atubular textile web, While maintaining around the web a mass of plastic material, whereby the ,web i@ impregnated, Vand removing the excess of' such material from the web. .l

4. The process of making hose or the like, which consists inV applying a doughdike plastic coat-ing upon a tubular core and im. mediately forming thereon a textile web the `yarns of which are impregnated by such .40 coating, and removing au excess of such coating from the web.

5. The process of making hose or thelilte, which consists in applying aplastic coating upon a tubular core, then forming thereon a 5 -textile Web which is thereby penetrated. by

lsuch coating, and finally removing an erp-ess of such coating from the exterior of the web. i, 6. The process of making hose or the li ke, which consists in passing a tubulaivcore through a mass of plastic material, removing .l an excess of such material to leave a unifmmr "coating, then forming thereon a textile web whereby the coating penetrates such web, and then removing from `the exterior ot' the web an excess of coating material.

7. An apparatus for making hose or the l like, comprising means for forming a tubir lar textile web, and means for maintaining a mass of doughslike plastic material around said web whereby to coat the web.

8. An apparatus for making hose or the like, compmsing means for feeding a core `which the yarns on `their wz upwardly, means for applying plastic material to said core, means :torsubsequently forming a tubular textile-Web `around sain core,- Whereby it is penetrated by the plastic coating, and means Vfor finally removing an excess of such coating from the exterior of the core. Y

An. apparatus for ina-lring'hose or the like, comprising means for forming a tubular textile web, means for feeding "the same upwardly, and means for applyinga plastic material to the yarns thereof immediately before they are united. .in the web.

l0. An apparatus. for making .hose or the like, comprising means for fijn-ming a tubular textile web, means for feeding the same upwardly, and means for maintaining around the web a mass of plastic material through y to form the web.

- ll. .an apparatus .tor making hose or the like, comprising means for Iforming a tubular textile Web, a wiping die through `which said Web passes, and means for( applying plastic material to the hosebetore reaching said die, whereby the excess thereof is removed by the die, anda mass such material maintained against the die.

4 12. An apparatus for making hose or the lille, comprising means for harming atubu lar textile web upon a core, means for apply ing a coating ol plastic material. upon such lcore, and a wiping die through which the hose passes, adapted to remove-an excess oi such plastic material from the web.

i3. An apparatus for i'ailaking hose or the like, comprising vmeans for forming tubo. lar textile web upon a core, and moans for prz'slinlinarily coating' said core 'with plastic material, comp 'ng a coating eliai'nber, a tubular guide tor directing the eore through .cl chamber, and a wiping die at the enit trom said chamber for removing eioizess ot material.

14. An apimratus for malring hose or the l like, comprising means for forming a talmlar textile web uponv a core, and means for preliminarily coating said core with plastic material, comprising a coating chan'iber, a tubular guide for directing the core through `said chamber, and a wiping die at the exit from said chamber for removing excess of material, a hopper for the coating material, and. a conveyer for-forcing the material from said hopper into said chamber.

ln Witness i'vhereot, l have hereunto signed 'my name in the presence of tivo subscribing witness. s.

' l'illllltll7 ZENAS COBB..

Witnesses:

WILLIAM H. TUCKER, An'oosrus R. TAFT. 

